$\"\"$

\

The equation is $\"\"$ .

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Square each side and eliminate the square roots.

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$\"\"$

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Apply formula: $\"\"$ .

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$\"\"$ $\"\"$

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Subtract $\"\"$ from each side.

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$\"\"$

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$\"\"$

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$\"\"$ divide into factors $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ $\"\"$

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Check:

\

To check the solution, substitute $\"\"$ in $\"\"$ .

\

$\"\"$

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$\"\"$

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$\"\"$

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Evaluate square roots: $\"\"$ .

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$\"\"$ \ \ The solution is "false".

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$\"\"$

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Check:

\

To check the solution, substitute $\"\"$ in $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Evaluate square roots: $\"\"$ .

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$\"\"$

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The solution is "True".

\

$\"\"$

\

The solution is $\"\"$ .